A failure model for corded composite plates with edge fractures

Abstract

The tensile strength of composite plates with unidirectional cords depends on the way the load is distributed within the matrix by the cords. Of particular interest is the effect of a broken edge cord or a number of in-line fractured edge cords on the breaking strength of the plate when it is subjected to axial loading. This paper describes a model for estimating the maximum allowable number of broken tensile members in a bonded composite plate before catastrophic failure occurs. The model has application to the analysis of steel-cord and Kevlar-cord elastomer belts containing broken edge cords as the result of impact damage.